Open Outlook
Go to the folder list in the left pane
Right-click the mailbox name or the folder where you want the new folder
Select New Folder
Type the folder name
Press Enter
Drag emails into the new folder if needed
Open Outlook
Go to the folder list in the left pane
Right-click the mailbox name or the folder where you want the new folder
Select New Folder
Type the folder name
Press Enter
Drag emails into the new folder if needed